Ajax loader

Us

Pro Record

"A-Train"

12-5-0

Aaron Simpson

Aaron "A-Train" Simpson

Photo Source:  

Mma weekly

Fighter Details

  • Given Name: Aaron Michael Simpson
  • MMA Record: 12-5-0 (Win-Loss-Draw)
  • Nickname: A-Train
  • Current Streak: 2 Losses
  • Age: 44 | Date of Birth: 1974.07.20
  • Last Fight: March 23, 2013 in WSOF
  • Weight Class: Welterweight | Last Weigh-In: 171.0 lbs
  • Affiliation: Power MMA
  • Height: 6'0" (183cm) | Reach: 73.0" (185cm)
  • Career Disclosed Earnings: $212,000 USD
  • Born: Gunnison, Colorado, United States
  • Fighting out of: Phoenix, Arizona
  • College: Arizona State University
  • Foundation Style: N/A
  • Fighter Links:
  • Personal Links:

Aaron Simpson Welterweight Ranking History

Tapology Regional Rankings Rankings FAQ

Aaron Simpson is ineligible for regional rankings due to inactivity.
Fighters must have at least one completed MMA bout in the past two years to be ranked.

Gyms & Affiliations

Aaron Simpson MMA Fight Record

Record by Year and By Promotion

Pro Results Show Detail View
info We're updating our layout. Expand individual bouts below, or all at once with the link above.

Aaron Simpson Wiki Update Wiki

An NCAA Division I All-American for Arizona State University in 1996 and 1998, Aaron Simpson did not begin competing in mixed martial arts until 2007, at 33 years young.  Once he made the transition, however, it quickly became apparent that he was one of the most talented prospects to enter the sport in years. 


Simpson reeled off seven straight victories, defeating the likes of Ed Herman and Tom Lawlor in back-to-back stints with the WEC and UFC. In June 2010, Simpson's undefeated run came to a close courtesy of a rejuvenated Chris Leben, who knocked Simpson out in the second round at the TUF 11 Finale.  He would lose two in a row, before bouncing back with three consecutive wins. 


This streak would come to end in his next fight, as he lost to Ronny Markes via split decision.  The loss made A-Train re-evaluate his career and he ultimately decided to drop down to Welterweight, to compete with fighters more his own size.  Simpson's welterweight debut was a successful one, as he won a decision over Kenny Robertson.  


While his wrestling is undoubtedly his strong suit, Simpson has shown a natural ability to finish his opponents with strikes, having knocked out the majority of his victims.  Now being one of the bigger guys in his division instead of one of the smaller guys, Simpson is looking forward to a successful career in his new weight class.


Following a 2nd round knockout loss to Mike Pierce at UFC on FX: Browne vs Silva he would be cut from the UFC. Shortly after being cut it was announced that he was the newest fighter on the growing World Series of Fighting roster. He is set to face Josh Burkman at WSOF 2 on March 23rd, 2013. 

Last updated 02.16.2013, 12:01 PM ET
Wiki Contributors:

Aaron Simpson News View All

On a show dedicated to unearthing hidden gems, one lightweight prospect played his ro... (9 days ago)
It’s been over a decade since Ryan Bader and Muhammed Lawal faced off in competition,... (2 months ago)
Josh Burkman’s submission defeat vs. Michel Prazeres at UFC Fortaleza represented the... (over 1 year ago)
Josh Burkman’s submission defeat vs. Michel Prazeres at UFC Fortaleza represented the... (over 1 year ago)
UFC Hall of Famer B.J. Penn blasted fighters for the recent trend of asking for ‘mone... (over 1 year ago)
A new middleweight signing and a new lightweight signing as two of the world's premie... (2 years ago)
Brisbane got more than it may have bargained for with some fun finishes and great per... (over 2 years ago)
The 18th installment of the Weight List features discussion on George Lockhart's late... (over 2 years ago)
  • MMAFighting.com : PFL 4 results: Ex-WSOF champs Lance Palmer, Andre Harrison punch tickets into featherweight postseason
  • MMAFighting.com : PFL 4 results: Ex-WSOF champs Lance Palmer, Andre Harrison punch tickets into inaugural postseason
  • MMAFighting.com : Jake Ellenberger vs. Bryan Barberena rebooked for UFC Lincoln
  • MMAFighting.com : UFC champion Max Holloway provides small update on his condition
  • MMAFighting.com : PFL 4: Palmer vs. Tuerxun live stream online
  • MMAFighting.com : PFL 4 Results: Palmer vs. Tuerxun
  • MMAFighting.com : PFL heavyweight Francimar Barroso feels he’s finally fulfilling his true potential with no weight cutting
  • MMAFighting.com : Alexa Grasso out of UFC Lincoln fight with Angela Hill
  • MMAFighting.com : Update: Cortney Casey in for Alexa Grasso against Angela Hill at UFC Lincoln
  • MMAFighting.com : Emil Meek says he’s ‘not happy’ he wasn’t invited to the UFC Hamburg media day
  • MMAFighting.com : Volkan Oezdemir out of UFC 227 fight against Alexander Gustafsson
  • MMAFighting.com : After earning points without even fighting, Philipe Lins feels at ease in PFL
  • MMAFighting.com : Cain Velasquez trains at WWE Performance Center
  • MMAFighting.com : Drew Dober working to get CSAC clearance to fight at lightweight on UFC Lincoln card
  • MMAFighting.com : Fedor Emelianenko vs. Chael Sonnen Bellator grand prix semifinal booked for Oct. 13
  • MMAFighting.com : Darren Till: ‘I’ve been offered Tyron Woodley and he turned the fight down’
  • MMAFighting.com : Marlon Vera takes short-notice fight at UFC 227, faces Wuliji Buren
  • MMAFighting.com : Daniel Cormier vs. ‘Shogun’ Rua? Not if Anthony Smith has his way
  • MMAFighting.com : Marc Diakiese on Nasrat Haqparast: I’m the toughest fight of his life
  • MMAFighting.com : Mark Hunt vs. Alexey Oleynik announced as UFC Moscow main event